الفهرس 
Convolutional Error Control CodesOnly 14 pages are availabe for public view
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Abstract
Next-generation broadband cellular mobile networks are expected to provide
ubiquitous high-data-rate coverage in the most cost-effective manner. To achieve this
objective, high-spectral-efficiency schemes are required.
Wireless coverage is only ubiquitous if reliable service is provided throughout the
serving area of a Base Station (BS). With the traditional cellular architecture,
increasing the capacity along with the coverage requires deployment of a large
number of BSs. This approach is cost prohibitive to network service providers. As an
alternative, relaying techniques are expected to alleviate this coverage problem since
the Relay Station (RS) with less functionality than the BS can forward high data rates
to remote areas of the cell while lowering infrastructure cost.
This thesis discusses the two major impairments that severely degrade the spectral
efficiency performance of the broadband cellular mobile networks, multi-path fading
and Inter-Cell Interference (ICI) from neighboring cells which is the major challenge
that degrade the performance of cellular mobile systems, particularly for cell edge
users. The thesis also introduces several relay based schemes concerning performance
improvement of the broadband cellular mobile networks.
First, a single-relay coded cooperative wireless communication system using different
FEC codes is presented. Using computer simulations the performance of the proposed
single-relay coded cooperative system was compared with direct transmission, noncooperative
transmission (single-hop transmission) and other cooperative protocols
(i.e., Amplify and Forward (AAF) and Decode and Forward (DAF)) considering
transmission over both Additive White Gaussian Noise (AWGN) and different
Stanford University Interim (SUI) channel models.
Secondly, two new multi-relay cooperative wireless communication systems have
been introduced; multi-relay DAF cooperative system with combined best relay
selection and adaptive modulation and multi-relay coded cooperative system with
combined best relay selection and adaptive Low Density Parity Check (LDPC) coded
modulation.
Finally, Self-Organized Dynamic Resource Allocation (SODRA) schemes are
presented using different Inter-Cell Interference Coordination (ICIC) techniques (i.e.,
Fractional Frequency Reuse (FFR), Enhance Fractional Frequency Reuse (EFFR) and
III
Soft Frequency Reuse (SFR)). The proposed SODRA schemes dynamically allocate
resources (power and frequency) to cell inner and outer regions in relay based LTE-A
networks. The performance of the proposed SODRA schemes with and without relays
is evaluated using MATLAB simulations and compared with different frequency
reuse schemes (i.e., reuse-1, reuse-3 and RFS(.The performance indicators used for
comparison are cell throughput, cell-edge throughput, the Signal to Interference plus
Noise Ratio (SINR) distribution and fairness indicator.